Well all u have to do is minus -6 from 23 so 23-6 is 17. Then all u have to do is add 0+17 so ur answer is the temperature changed 17 F
His answer is not reasonable because 5/8>4/3
7(8)+7(d)
56+7d=
The question mark would be 7.
The answer is 12.1, add both 4.5 and 7.6 and you get 12.1
